Ricoh pro c901 - Page 489

Technical Bulletin PAGE: 37/75
Reissued:21-Apr-14
Model: Aries-P1.5/C1.5
Date: 10-Mar-14
No.: RM077107b
No.2
Shock-jitter at
OPC
Actions for No.1 & No.2 to
be performed as a set.
(See actions described for
No.1.)
 Low productivity
No.3
PTR vibration
due to Shock at
Fusing Unit
Entrance
1. Adjust the paper feeding
speed to +/- 0.2% against
the current speed.
2. Adjust the paper transfer
current to -10uA.
3. Apply paper with grain in
cross direction
 Possible Banding at
85mm TE (No.4)
 Possible 5mm pitch
banding (No.7)
 Possible change in
image length
 White spots could
appear
No.4
Banding at
85mm TE
(Shock at PTR
when paper
exits PTR)
1. Adjust the paper feed
speed to +/- 0.2% against
the current speed.
 Possible Shock-jitter
at PTR (No.3)
 Possible 5mm pitch
banding (No.7)
 Possible change in
image length
No.5
1.8mm Pitch
Banding
1. Change the dither pattern
to Dot
 Possible density
unevenness
 Possible Moire
No.6
2.5mm Pitch
Banding
1. Change the dither pattern
to Line
 Possible 1.8mm pitch
banding
No.7
5mm Pitch
Banding
1. Reduce the paper feed
speed to -0.1% or -0.2%
from the current speed.
 Possible Banding at
85mm TE (No.4)
 Possible change in
image length
No.8
10mm Pitch
Banding
Remove the modified fly
wheel.
 Possible shock-jitter
at OPC (No.2)
No.9
56mm Pitch
Banding
Replace the drum cleaning
unit.
None
No.10
8mm Pitch
Banding
Replace the developer gear
assembly.
None